STEEL PIPES AND FITTINGS-: GROUP (A) : 1/2" , 3/4" AND 1" C. S . WELDED PIPES .

SELF COLOR TO BS 1387 TABLE 2 ( MEDIUM ) .

THREADED BOTH ENS TO BS 21 TAPER . THREADS

SHALL BE PROTECTED AGAINST DAMAGE USING

CAPS.

*ALL PIPES SHALL PASS BENDING TEST ON FOUR

IRECTIONS FROM THE SEAM I.E. 180 – 90 DEG . BOTH

DIRECTION TO THE SEAM AND ZERO WITH BENDING

RADIUS 44 MM FOR 1/2"PIPES.66 MM FOR 3/4" PIPES

AND 88 MM FOR 1" PIPES THE ESULTS SHALL SHOW

NEITHER FLATTENG NOR SPLIT AT THE SEAM

.

GROUP (B ) : STEEL PIPES ACCORDING TO API 5L GR. B

LATEST EDITION E.R.W. OR SEAMLESS WRAPPRD WITH

YELLLOW POLYETHYLENE CLADDING ACCORDING TO

DIN 30670 , UN COATED AREA SHALL HAVE ANTI RUST

PAINT , SIZES FROM 1" TO 18" IN DOUBLE RANDOM

LENGTHS . WALL THICKNESS IS ACCORDING TO

CHEDULE 4O FROM DIAMETERS ( 3 TO 6 INCHES ) AND

7

SCHEDULE 30 FOR DIAMETERS ( 8 TO 18

INCHES ) .PIPE ENDS SHALL BE BEVELLED AND COVERED

WITH P. E . CAPS.

GROUP (C) : C . S FITTINGS ACCORDING TO BS 1965 ,

BS 1403 , BS 3381 , BS 3799 AND BS 1640 . WALL

THICNESS IS ACCORDING TO SCHEDULE 40 FOR

EQUIVALENT PIPE DIAMETERS ( 8 TO 18 INCHES ) . FOR

MULTI SIZE FITTINGS THE LARGER SIZE SHALL BE

ONSIDERED FOR SELECTING WELL THICKNESS .

*SLIP - ON FILLET WELD FLANGES TO BS 1560 CLASS

150 RAISED FACE FROM MATERIAL TO BS 1503 – 161 28

A OR B , BOLTS TO BS 4882 GR B7 , NUTS AND

WASHERS TO BS 4882 GR 2H , EACH FLANGE IS

COMPLETE WITH ONE SET OF BOLTS NUTS AND

WASHERS

BRITISH STANDARD 1387 ( 1985 )

B S : 1387 ---- 1985

THIS BRITISH STANDARD SPECILIES REQUIREMENTS

FOR SCREWD AND SOCKETED STEEL TUBES AND

TUBULARS AND FOR PLAIN AND PIPE THREADS.

7

THIS STANDARD IS APPLICABLE TO TUBES OF

NOMINAL SAIZ DN 8 to DN 150 IN THREE SERIES OF

THICKNESS DESIGNATES LIGHT , MEDUIM ,and HEAVY

DEFINITIONS

1- NOMINAL SIZE ( DN ) :

ANUMERICAL DESIGNATION OF SIZE IS COMMON TO

ALL COMPONENTS IN PIPING SYSTEM OTHER THAN

COMPONEMTS DESIGNATED BY OUTSIDE DIAMETERS

OR THREAD SIZE .IT IS A CONVENIENT ROUND NUMBER

FOR REFERENCE PURPOSES AND IS ONLY LOOSELY

RELATED TO MANUFACTURING DIMENSIONS

NOTE :- 1

NOMINAL SIE IS DESIGNATED BY LETTERS DN

FOLLOWED BY A NUMBER.

NOTE -:

2THIS DEFINITION IS DENTICAL TO ISO 9708

TUBE:

ALONG HOLLOW, OPEN ENDED OBJECTED OF C IRCULAR

CROSS SECTION.

7

NOTE-:

THE TERM TUBE IS SYNONYMOUS WITH THE TERM

PIPE.

SOCKET-:

THE SCREW COUPLING UTILIZED IN JONING THE

TUBES TOGETHER.

NOTE-:

THE TERM SOKET IS SYNONYMOUS WITH THE TERM

COUPLAR.

TUBULARS-:

PIECES , NIPPLES , LONG SCREWS , BENDS , SPRINGS.

EXACT LENGTH-:

THE LENGTH OF TUBE EXCLUSIVE THE SOCKET.

STANDARD LENGTH-:

THE NOMINAL LENGTH OF a PIPE COMPONENTS WHICH

BY VIRTUE DUTOM AND PRACTICE HOS THE

NORMAL LENGTH TO WHICH THE COMPONENT IS

SUPPLIED.

DESIGNATION -:

TUBES: SHALL BE DESIGNATED BY THE NUMBER OF THIH

BRITH STANDARD ,THE NOMINAL SIZE (DN) AND

7

THICKNESS SERIES AS GIVEN IN TABLE 3,4, AND 5

TOGETHER WITH THE TYPE OF AND FINISH( PLAIN OR

SECREWED ENDS )e.g B.S. 1387 DN 20 MEDIUM

SERIES,SECREWED AND SOCKETED TUBE.

TUBULARS -:

TUBULARS SHALL BE DESIGNATED BY THE NUMBER OF

THIS BRITISH STANDARAD THE NOMINAL SIZE ( DN )

THICKNESS SERIES ,TYPE OF TUBULAR AND WHERE

APPROPRIATE ,THEIR LENGTH.

IN ADDITION,BENDS AND SPRINGS SHALL BE DESIGNATED

BY THEIR TYPE REFERENCE ( SEE FIGURE 6,7 ) e.g.B.S.1387

DN 20 MEDUIM SERIES ,BEND TYBE 1

SOCKETS BACK NUTS-:

SOCKETS AND BACK NUTS SHALL BE DESIGNATED BY THE

NUMBER OF THIS BRITISH STANDARD AND THE

RESPECTIVE NOMINAL SIZE (DH) OF THE TUBE FOR

WHICH THEY ARE INTENDED E G BS 1387 DN 20

BACKNUTS

MANUFACTURE OF THE PRODUCT

7

TUBES SHALL BE MANUFACTURED BY A WELDED

PROCESS SOCKETS SHALL BE MANUFACTURED BY

SEAMLESS OR MELDED PROCESS.

CHEMICAL COMPOSITION-:

THE CHEMICAL COMPOSITION OF STEEL SHALL COMPLY WITH TABLE ( 1 ).

THE CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES

AT ROOM TEMPERATURE

MECHANICAL PROPERTIES AT ROOM TEMPERATURE

CHEMICAL COMPOSITION %

Elongation Gauge lengthLo=5.65

YIELDSTRENGTH

RO (min)

TENSILESTRENGTH AM

Smax

Pmax

Mnmax

Cmax

20%N/mm²

195N/mm²

320 to 460%

0.045%

0.045%1.2

%0.20

) TABLE 1 (

NOTE 1: CHEMICAL ANALYSIS OF THE FINISHED

PRODUCT IS REQUIRED.

NOTE 2: THIS STEEL IS REQUIRED AS BEING7

WELDABLE , HOWEVER , CARS SHAULD

BE TAKEN AND WELDING SHOULD BE CARRIED OUT

IN ACCORDANCE WITH THE APPROPRATE BRITISH

STANDARD

* HEAT TREATMENT :-

Tubes shall be supplied the annealed or normalized condition

With the weld zone heat treated or after a hot finishing process

.

* MECHANICAL PROPERTIES *

The mechanical properties at room temperature shall be as given

in table 1((

* APPEARANCE AND SOUNDNESS *

Small imperfection which do not intrude on the minimum

thickness or which can be dressed out such that the thickness

after dressing

remains within the tolerance limit shall be be deemed not to

affect compliance with the standard surface imperfection shall

not be penned7

screw threads shall comply with this requirements of BS 21

except as provided for in joints( (

The ends shall be cut cleanly and nominally square with the

axis of the tub end be free from excessive burrs

. ** THE TUBES SHALL BE STRAIGHT

1 in 500 at measured at the center of the length**

** The tubes shall not include welds for joining length of strip.

Joints:

ALL screwed tubes and sockets shall be the readied in

accordance with BS 21 except as provided below and except

that an light tubes the length of useful threes shall be reduced

to 80% of that shown in column 12 of table 2 of BS 21 :

1985.

DIMENSIONS AND TOLERANCES:

* Dimensions :

The Dimensions of tubes shall be as given in tables 3,4 and 5.

Dimensions of sockets shall be as given in table 6.

7

* Tolerances :

The Tolerances on the out side diameter , thickness , mass and

length shall be as follows.

* Outside diameter :

Light tubes as given In table ( 3 )

Medium and heavy tubes as given in table ( 4 , 5 )

** THICKNESS :

Light tubes - 8%

Medium and heavy tubes - 10%

LENGTH**:

1 – MILL LENGTH :- When mill length are required tubes

shall be supplied in lengths of ( 6.4 m ) minimum no tube shall

exceed this length by more than 150 mm.

- 2 APPROXINATE LENGTHS -:

Where approximate lengths are required , either for screwed and

socketed tubes or for plain and tubes.

المقلوظة غير أو المقلوظة الماسورة هنا 0المقصود

7

3 – EXACT LENGTHS :

Where exact lengths are required either for screwed and

socketed tubes or for plain end tubes , each tube shall be within

+ 5 mm of the specified length.

4 – RANDOM LENGTHS :

when random lengths are ordered , tubes shall be supplied in one

of the following ways .

a ) In random lengths from 4 m to 7 m.

b ) for orders of over 150m of any one size of tube → eig . in

random lengths from 4 m to 7 m but including lengths ا

عن يزيد المطلوب % 7.5بماال الطول from 1.8m →عن

to 4m

NOTE : The purchaser should state in the enquiry or order

which lengths He required .

TESTING:

– VISUAL INSPECTION : 1 -

شــرحها سبق وقد

– TENSILE TEST : - 2

)Tensile strength , elongation (

7

QUTER DIAMETER

THICKNESS

LENGTH

شــرحها سبق وقد

– bend test : - 3

The bend test applies to tubes up to and including DH 50.

When tested in accordance with the following bend test the

finished tubes shall with stand the test with out showing any

signs of fracture of failure

.

4 – FLATING TFST :

من أكبر للمواسير أجراءه يتم االختبار هذا

– LEAK TIGHTNESS TEST : - 5

المصنع من تطلب الشهادة هذه

عند االختبار هذا المعدن . 50متضمنة المواصفة اما 1992/ 350بار

6 – BORE TEST ( HOT – DIP INC COATED TUBES ONLY ) :

بطول اختبارها المطلوب بطبقة 230العينة تغطيتها ويتم مم

زنك

الساخن ( " hot – dipعلى للمواصفة) .DN8طبقا

PROTECTION:

7

اختبار

DN 50تفلطح

" المطلوبة للمواصفات طبقا المصنع من تطلب الحماية وهذه

المثال سبيل على

Tubes shall be supplied self co lour

)I . e . uncoated ( or with a hat – dip inc costing.

* VARNISH :

مراحل :- على العملية هذه تتم

للماسورة" : . وتنظيف غسيل أوال

الزنك" : نسبة التقل بحيث منصهر زنك حوض فى غمرها ثانيا

%88.5عن

) " للمواصفة" : طبقا جلفنتها بعد المواسير اختبار يتم ثالثا

APPENDIX C(

** THREADS :

للجداول" ( بالمواصفة) Aطبقا 0الموجودة

كاب بتركيب المقلوظ الجزء حماية .ويجب

Mass of black tubathicknessOutside diameterDesignationNominal

7

Of

thread

Size

)DN(

Screwed&

socketed Plain end minmax

Kg/mKg/mmmmmmm

.519....5151.813.213.81/4-8..575.6701.818.717.13/810.956.9472.021.021.41/215

1.391.382.326.426.93/4202.001.982.633.233.81252.572.542.641.942.51 1/4323.273.232.947.848.41 1/2404.154.082.959.660.22 505.835.713.275.278.02 1/2856.896.723.287.888.738010.09.753.6113.0113.84100

Dimensions & masses are en accordance with ISO 65 ( light series to )

TABLE 3 DIMENSTIONS OF STEEL TUBES: LIGH

Mass of black tuba

thickness

Outside diameterDesignation

Of

thread

Nominal

Size

)DN( Screwed&

socketed Plain end minmax

.845.6412.313.313.91/4-8

.845.8392.316.817.43/810

7

1.221.212.621.121.71/215

1.221.562.626.627.23/420

2.432.413.233.434.2125

3.133.13.242.142.91 1/432

3.613.573.248.0048.81 1/240

8.15.033.659.860.82 50

6.556.433.675.476.82 1/285

8.548.374.088.189.5380

12.512.24.5113.3174.94100

17.116.65.0138.7140.55125

20.318.75.0164.1166.16150Dimensions & maximum and minimum outside diameters meet the requirements

of ISO 65

TABLE 4 DIMENSTIONS OF STEEL TUBES :

Medium

Mass of black tuba

thickness

Outside diameterDesignation

Of

thread

Nominal

Size

)DN( Screwed&

socketed Plain end minmax

.768.7852.913.313.91/48

1.031.022.918.817.43/510

1.451.443.221.121.71/215

7

1.881.873.226.627.23/420

2.962.944.033.434.2125

3.833.84.042.142.81 1/4

4.424.384.048.048.81 1/2

6.266.184.559.860.8250

8.057.934.575.476.62 1/285

10.510.36.088.189.5380

14.814.55.4113.3114.94100

18.417.85.4138.7140.65125

21.920.35.4164.1155.16150

Dimensions & maximum and minimum outside diameters meet the requirements

of ISO 65

TABLE 5 DIMENSTIONS OF STEEL TUBES :

HEAVY

7